4 papers
Zero-field thermopower of a thin heterostructure membrane with a 2D electron gas
M. Schmidt, G. Schneider, Ch. Heyn +2
We study the low-temperature thermopower of micron sized, free-standing membranes containing a two-dimensional electron system. Suspended membranes of 320 nm thickness including a…
Thermopower of a 2D electron gas in suspended AlGaAs/GaAs heterostructures
M. Schmidt, G. Schneider, Ch. Heyn +2
We present thermopower measurements on a high electron mobility two-dimensional electron gas (2DEG) in a thin suspended membrane.We show that the small dimension of the membrane su…
Enhanced Transmission in Rolled-up Hyperlenses utilizing Fabry-Peŕot Resonances
Jochen Kerbst, Stephan Schwaiger, Andreas Rottler +6
We experimentally demonstrate that the transmission though rolled-up metal/semiconductor hyperlenses can be enhanced at desired frequencies utilizing Fabry-Pérot resonances. By mea…
Time-Resolved Studies of a Rolled-Up Semiconductor Microtube Laser
Ch. Strelow, M. Sauer, S. Fehringer +6
We report on lasing in rolled-up microtube resonators. Time-resolved studies on these semiconductor lasers containing GaAs quantum wells as optical gain material reveal particularl…